CN206389687U - A kind of device for being used to shield strong-electromagnetic field and strong static magnetic field - Google Patents
A kind of device for being used to shield strong-electromagnetic field and strong static magnetic field Download PDFInfo
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- CN206389687U CN206389687U CN201720098450.8U CN201720098450U CN206389687U CN 206389687 U CN206389687 U CN 206389687U CN 201720098450 U CN201720098450 U CN 201720098450U CN 206389687 U CN206389687 U CN 206389687U
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Abstract
The utility model discloses a kind of device for being used to shield strong-electromagnetic field and strong static magnetic field, it is characterised in that：Include it is high lead the radome that copper internal layer and soft iron outer layer are constituted, the height is led between copper internal layer and soft iron outer layer and is welded as a whole by weldering of exploding, and the radome is removably mounted at by outside protection equipment, and with being there is certain air gap by shielding device by support.The utility model unites two into one electro-magnetic wave shield and shielding in of magnetostatic field cover, make shielding case structure simple, both it can carry out electromagnetic-field-shielded, shielding in of magnetostatic field can be carried out again, the sheet material that blast weldering is formed so that material volume is greatly reduced so that box body structure design is small and light, on the basis of reliability, maintenanceability and appearance looks elegant is ensured, the waste to space is reduced to greatest extent；The demand to installing space is greatly reduced, and uses demountable structure, the difficulty of installation, maintenance and upgrading is greatly reduced.
Description
Technical field：
The utility model belongs to electromagnetic-field-shielded technical field, and in particular to require high electricity for security and reliability
Device equipment, ensure its it is stable reliably and with long-term operate in High-Field electromagnetic environment, relate generally to it is a kind of be used to shielding strong-electromagnetic field and
The device of strong static magnetic field.
Background technology：
Hybrid magnet is combined by water cooling magnet and superconducting magnet, and highest can produce the 45T worlds most High-Field, to surrounding
Electronic equipment magnetic screen requirement it is extremely harsh, be available for utilizing currently without ready-made and reliable magnetic shielding device.In magnet liter
Field, steady field, withdraw from the arena during, produce powerful electromagnetic wave, and high intensity static magnetic field.The wherein vacuum meter of hybrid magnet, liquid helium
The equipment such as proportion valve, molecule pump group, involving in stronger electromagnetism can not just run, it is necessary to reduce electricity under higher steady magnetic field
Electromagnetic wave radiation intensity and static magnetic field strength.
Vacuum measurement equipment is the sensor of measurement of vacuum, the vacuum of measurement can be converted into data display and gone out
Come, have the constructional device that vacuum is converted to electric signal inside it, the constructional device cannot be operated in compared with forceful electric power magnetic environment
And, it is necessary to carry out the shielding of electromagnetic field and magnetostatic field to it in higher magnetostatic field.
Liquid helium proportion magnetic valve door is the electric equipment for controlling liquid helium uninterrupted, including control unit and execution machine
Structure, the constructional device cannot operate in compared with forceful electric power magnetic environment and higher magnetostatic field, it is necessary to carry out electromagnetic field to it and quiet
The shielding in magnetic field.
Molecular pump is the equipment that vacuum environment is provided for hybrid magnet, including control unit and executing agency, the knot
Structure device cannot operate in compared with forceful electric power magnetic environment and higher magnetostatic field, it is necessary to carry out the screen of electromagnetic field and magnetostatic field to it
Cover.
Utility model content：
The utility model purpose is exactly to be used to shield strong-electromagnetic field and strong there is provided one kind to make up the defect of prior art
The device of magnetostatic field, it is ensured that vacuum measurement equipment, liquid helium proportion magnetic valve door, molecule pump group under strong-electromagnetic field and strong static magnetic field
Security and reliable.
The utility model is achieved through the following technical solutions：
A kind of device for being used to shield strong-electromagnetic field and strong static magnetic field, it is characterised in that：Include height and lead copper internal layer and soft
The radome that iron outer layer is constituted, the height is led between copper internal layer and soft iron outer layer and is welded as a whole by weldering of exploding, the shielding
Cover is removably mounted at by outside protection equipment, and with being there is certain air gap by shielding device by support.
Described height leads copper internal layer as internal layer shielding material, and it uses Cu-OF materials, according to the frequency of alternating electromagnetism ripple
Change difference, its thickness is adjusted, to reach optimal electromagnetic shielding effect.
Described soft iron outer layer uses DT4A electrical pure irons, for shielding magnetostatic field, according to the size of magnetic field intensity, to it
Thickness is adjusted, to reach optimal shielding in of magnetostatic field effect.
Described radome trypsin method has layer of paint, and it is sprayed using the paint with facility environment solid colour, both
It can prevent software from getting rusty and the high oxidation for leading copper, the aesthetics of shielding device can be improved again.
Described support is processed using 316L magnetism-free stainless steels, to reduce the shadow of electromagnetic field and magnetostatic field to support
Ring.
Described support is provided with epoxy pad with radome junction, prevents inductive loop, causes heating and produces
Extra stray magnetic field.
The dorsad direction of Electromagnetic Sources and magnetostatic field source at the opening of described radome, can be greatly reduced needed for material
Thickness, reduces materials'use amount, reaches preferable shield effectiveness.
The utility model has the advantages that：
1）The screening arrangement leads copper using height and soft iron carries out explosive welding, forms composite board, can both carry out electromagnetism
Field shield, can carry out shielding in of magnetostatic field again.
2）The sheet material that blast weldering is formed so that material volume is greatly reduced so that box body structure design is small and light.Ensureing
On the basis of reliability, maintenanceability and appearance looks elegant, the waste to space is reduced to greatest extent.
3) at blast welding line the solder of other materials need not be inserted, weld seam is by the fusing of itself material of splicing sheet material
Into so the material of commissure is consistent with the sheet material welded, without other miscellaneous materials and qualities incorporations wherein.So weld seam
In the presence of will not weaken and change absorption and reflection performance of the overall structure to electromagnetic wave.
4）Radome uses design for disassembly form, makes its simple in construction, it is easy to which processing is realized, is easily installed maintenance and is risen
Level, it is ensured that it has good operating mode.
5）The opening prescription of radome is in opposite direction to the emission source with magnetostatic field and electromagnetic field, with the shielding being optimal
Efficiency.
Several measure integrated uses above, electro-magnetic wave shield and shielding in of magnetostatic field cover are united two into one, make radome knot
Structure is simple, greatly reduces the demand to installing space, and uses demountable structure, greatly reduces installation, maintenance and liter
The difficulty of level.
Brief description of the drawings：
Fig. 1 is vacuum measurement device mask schematic diagram,
Fig. 2 is that liquid helium proportion magnetic valve door gear shields schematic diagram,
Fig. 3 is molecular pump group screen shield structure schematic diagram.
In upper figure, 1. soft iron screen layers, 2. height lead copper shield, 3. vacuum measurement equipment, 4. epoxy insulations lining
Set, 5. screw rods, 6. support pedestals, 7. valve radomes, 8. liquid helium proportion valve equipment, 9. epoxy backing plates, 10.
Frame, 11. molecular pump radomes, 12. molecular pumps, 13. bolts, 14. epoxy supports, 15. 316L liftable supports.
Embodiment：
Referring to accompanying drawing.
Embodiment 1：
There are 4 vacuum measurements to regulate at a kind of outer Dewar of hybrid magnet, strong-electromagnetic field and strong static magnetic field are in due to regulating
In, in debugging process, because the electromagnetism of main magnet involves static magnetic field interference, it is impossible to normal work, therefore need to be to regulating progress
Electromagnetism and magnetic shielding.
Main magnet central magnetic field intensity be 45T, vacuum measurement equipment 3 apart from main magnet radial direction 2400mm, axial 910mm,
The frequency of electromagnetic wave is produced during main magnet excitation and demagnetization, belongs to low-frequency range（DC to 100KHz）, internal layer shielding material
Copper shield 2 is led for the height of 3mm Cu-OF materials reach optimal shield effectiveness from thickness.Magnet is in vacuum measurement equipment position
Stable state static magnetic field strength produced by putting is 1200Gs, and vacuum gauge magnetic field intensity allowable is 50Gs, is computed outer layer soft iron screen
Covering layer 1 uses thickness to can reach optimal shield effectiveness for 30mm DT4A electrical pure irons.Specific shielding construction, the institute of reference picture 1
Show.
Surface treatment coating is using light grey surface spraying, 50 μm of paint thickness.Interior is used, and one is kept with environmental colors
Cause.Paint be it is non-conductive, non-magnetic, sprayed according to actual needs, its color and thickness, do not influence shielding imitate
Energy.The effect of paint, which is that protection DT4A electrical pure irons outer surface is not oxidized, gets rusty, and keeps long-lasting shine and handsome in appearance.
Radome and equipment is regulated by shielding vacuum measurement, be fixed on by screw rod 5 on support pedestal 6.Support pedestal 6
Physical size and Mechanical Strength Design, can be adjusted according to actual needs, it is necessary to which the factor considered includes shielding device
Weight, size etc., its construction profile is designed according to actual installation environment and fixed form.The material of supporting support is to utilize
316L magnetism-free stainless steels are processed, to reduce the influence of electromagnetic field and magnetostatic field to support.Support is adopted with radome junction
Pad is made with epoxy insulation bushing 4, to prevent inductive loop, and causes heating and produces extra stray magnetic field.
Embodiment 2：
There are 19 liquid helium proportion magnetic valve doors at a kind of outer Dewar of hybrid magnet, because valve is in strong-electromagnetic field and strong quiet
In magnetic field, in debugging process, because the electromagnetism of main magnet involves static magnetic field interference, it is impossible to normal work, therefore need to be to valve
Door carries out electromagnetism and magnetic shielding.Liquid helium proportion magnetic valve door is apart from main magnet radial direction 5300mm, axial 600mm.Shielding material
From thickness copper is led for 3mm Cu-OF height.Magnet is in the stable state static magnetic field strength produced by liquid helium proportion magnetic valve door position
150Gs, valve magnetic field intensity allowable is 20Gs, is computed can reach optimal shielding using thickness for 10mm DT4A electrical pure irons
Effect.Specific shielding construction, shown in reference picture 2.Surface treatment coating is using light grey surface spraying, 50 μm of paint thickness.
Interior is used, and is consistent with environmental colors.
Valve radome 7 and liquid helium proportion magnetic valve door equipment 8, are each attached on support 10.The physical size of support 10
And Mechanical Strength Design, be adjusted according to actual needs, it is necessary to the factor considered include comparation and assessment equipment weight, radome
Weight, its construction profile is designed according to actual installation environment and fixed form.The material of supporting support be using 316L without
Magnetic stainless steel is processed, to reduce the influence of electromagnetic field and magnetostatic field to support.Support uses epoxy with radome junction
Backing plate 9, to prevent inductive loop, and causes heating and produces extra stray magnetic field.
Embodiment 3：
There are 2 molecular pumps 12 at a kind of outer Dewar of hybrid magnet, because molecular pump 12 is in strong-electromagnetic field and strong static magnetic field
In, in debugging process, because the electromagnetism of main magnet involves static magnetic field interference, it is impossible to normal work, therefore valve need to be carried out
Electromagnetism and magnetic shielding.Molecular pump is apart from main magnet radial direction 6300mm, axial 400mm.Shielding material is 3mm's from thickness
Cu-OF height leads copper.Magnet is 100Gs, molecular pump magnetic field intensity allowable in the stable state static magnetic field strength produced by molecular pump position
For 50Gs, it is computed can reach optimal shield effectiveness using thickness for 5mm DT4A electrical pure irons.Specific shielding construction, ginseng
According to shown in Fig. 3.Surface treatment coating is using light grey surface spraying, 50 μm of paint thickness.Interior is used, and is kept with environmental colors
Unanimously.
Molecular pump radome 11 and equipment is regulated by shielding vacuum measurement, liftable support 15 is fixed on by bolt 13
On.The physical size and Mechanical Strength Design of liftable support 15, the factor, it is necessary to consider can be adjusted according to actual needs
Weight including appraising through comparison equipment, the weight of molecular pump radome designs its knot according to actual installation environment and fixed form
Structure profile.The material of liftable support is processed using 316L magnetism-free stainless steels, to reduce electromagnetic field and magnetostatic field to branch
The influence of frame.Liftable support 15 uses epoxy support 14 with the junction of molecular pump radome 11, to prevent to sense whirlpool
Stream, and cause heating and produce extra stray magnetic field.
Claims (7)
1. a kind of device for being used to shield strong-electromagnetic field and strong static magnetic field, it is characterised in that：Include height and lead copper internal layer and soft iron
The radome that outer layer is constituted, the height is led between copper internal layer and soft iron outer layer and is welded as a whole by weldering of exploding, the radome
It is removably mounted at by support by outside protection equipment, and with being there is certain air gap by shielding device.
2. the device according to claim 1 for being used to shield strong-electromagnetic field and strong static magnetic field, it is characterised in that：Described height
Copper internal layer is led as internal layer shielding material, it uses Cu-OF materials.
3. the device according to claim 1 for being used to shield strong-electromagnetic field and strong static magnetic field, it is characterised in that：Described is soft
Iron outer layer uses DT4A electrical pure irons, for shielding magnetostatic field.
4. the device according to claim 1 for being used to shield strong-electromagnetic field and strong static magnetic field, it is characterised in that：Described screen
Covering cover trypsin method has layer of paint.
5. the device according to claim 1 for being used to shield strong-electromagnetic field and strong static magnetic field, it is characterised in that：Described branch
Frame is processed using 316L magnetism-free stainless steels.
6. the device according to claim 1 for being used to shield strong-electromagnetic field and strong static magnetic field, it is characterised in that：Described branch
Frame is provided with epoxy pad with radome junction.
7. the device according to claim 1 for being used to shield strong-electromagnetic field and strong static magnetic field, it is characterised in that：Described screen
Cover at the opening of cover the dorsad direction of Electromagnetic Sources and magnetostatic field source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720098450.8U CN206389687U (en) | 2017-01-20 | 2017-01-20 | A kind of device for being used to shield strong-electromagnetic field and strong static magnetic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720098450.8U CN206389687U (en) | 2017-01-20 | 2017-01-20 | A kind of device for being used to shield strong-electromagnetic field and strong static magnetic field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206389687U true CN206389687U (en) | 2017-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720098450.8U Active CN206389687U (en) | 2017-01-20 | 2017-01-20 | A kind of device for being used to shield strong-electromagnetic field and strong static magnetic field |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793736A (en) * | 2017-01-20 | 2017-05-31 | 中国科学院合肥物质科学研究院 | A kind of device for shielding strong-electromagnetic field and strong static magnetic field |
| US11889223B2 (en) | 2021-03-31 | 2024-01-30 | Raytheon Company | Explosively welded cooled infrared camera |
-
2017
- 2017-01-20 CN CN201720098450.8U patent/CN206389687U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793736A (en) * | 2017-01-20 | 2017-05-31 | 中国科学院合肥物质科学研究院 | A kind of device for shielding strong-electromagnetic field and strong static magnetic field |
| US11889223B2 (en) | 2021-03-31 | 2024-01-30 | Raytheon Company | Explosively welded cooled infrared camera |
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